Magnetic and transport characteristics on high Curie temperature ferromagnet of Mn-doped GaN

Takahiko Sasaki; Saki Sonoda; Yoshiyuki Yamamoto; Ken-ichi Suga; Saburo Shimizu; Kouichi Kindo; Hidenobu Hori

doi:10.1063/1.1451879

journal article May 15, 2002

Magnetic and transport characteristics on high Curie temperature ferromagnet of Mn-doped GaN

Takahiko Sasaki Saki Sonoda Yoshiyuki Yamamoto

Ken-ichi Suga Saburo Shimizu Kouichi Kindo Hidenobu Hori

Journal of Applied Physics Vol. 91 No. 10 pp. 7911-7913 · AIP Publishing

View at Publisher Save 10.1063/1.1451879

Abstract

Mn-doped GaN films on sapphire (0001) substrates were grown by molecular beam epitaxy system using ammonia as nitrogen source. The result of magnetization measurement gives Curie temperature as high as 940 K. The field and temperature dependencies of the magnetization show coexistence of ferromagnetic and paramagnetic phases. In addition, the temperature dependencies of electrical resistance and carrier concentration were measured to investigate the relation between the ferromagnetism and transport property. Below about 10 K, a similar anomalous increase of magnetization and resistance is observed.

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Details

Published: May 15, 2002
Vol/Issue: 91(10)
Pages: 7911-7913

Authors

T

Takahiko Sasaki

Materials Science, Japan Advanced Institute of Science and Technology (JAIST) 1, 1-1 Asahidai Tatsunokuchi, Nomi, Ishikawa, 923-1292, Japan

S

Saki Sonoda

ULVAC JAPAN, Ltd., 2500 Hagisimo, Chigasaki, Kanagawa, 253-8543, Japan

Y

Yoshiyuki Yamamoto

Materials Science, Japan Advanced Institute of Science and Technology (JAIST) 1, 1-1 Asahidai Tatsunokuchi, Nomi, Ishikawa, 923-1292, Japan

K

Ken-ichi Suga

KYOKUGEN, Osaka University, Toyonaka, Osaka, 560-8531, Japan

S

Saburo Shimizu

ULVAC JAPAN, Ltd., 2500 Hagisimo, Chigasaki, Kanagawa, 253-8543, Japan

K

Kouichi Kindo

KYOKUGEN, Osaka University, Toyonaka, Osaka, 560-8531, Japan

H

Hidenobu Hori

Materials Science, Japan Advanced Institute of Science and Technology (JAIST) 1, 1-1 Asahidai Tatsunokuchi, Nomi, Ishikawa, 923-1292, Japan

Cite This Article

Takahiko Sasaki, Saki Sonoda, Yoshiyuki Yamamoto, et al. (2002). Magnetic and transport characteristics on high Curie temperature ferromagnet of Mn-doped GaN. Journal of Applied Physics, 91(10), 7911-7913. https://doi.org/10.1063/1.1451879

Magnetic and transport characteristics on high Curie temperature ferromagnet of Mn-doped GaN

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